Nut-lock



(im 11p-deli.) l

r .f. ;f" T2 if" ted June Y19, 1888. l

Y them from turning.

UNITED STATES PATENT QFFICE.,

ANDREW B. KEER, OF LOGANS FERRY, PENNSYLVANIA.

NUT-LOC K.

5152i(HIFICAJIJION forming pari; of Letters Patent N`o.r384,76'7, dated June 19, 1888.

Application tiled February 20, i888. Serial No. 264,638. (No model.) y

To aZZ whom it may concern:

Be it known that I, ANDREW B. KEER, of Logans Ferry, in the county ot' Allegheny and State of Pennsylvania, have invented a new and useful improvement in Nut-Locks; and I d0 hereby1 declare the following to be a full, clear, and exact description thereof, reference being` had to the accompanying drawings, forming part of this specification, in which- Figure l is a side view of a railroad-rail provided with my improved nut-locking device. Fig. 2 is a vertical erosssection on the linea? a@ of Fig. l. Fig. 3 is a. plan view ofthe blank from which .the locking-plate is formed, the lines on which the meta-l is bent being shown by dotted lines. Eig. 4 is an edge view of the locking-plate. Fig. 5 is a horizontal section on, theline y y of Figs. 1 and 2. v

Like symbols of reference indicate like parts in each.

In the drawings, 2 represents the railwayrail, and 3 and 4 represent adjacent bolts which. pass through the rail and through the tishplatcs t; in the usual way.

5 are the nuts, which are screwed on the bolts.

The locking device which I employ consists ot' a plate having at its ends bent lips, which, when the plate is set between adjacent nuts, bear against the sides ofthe nuts and prevent Ailxtending between the i adjacent bolts is a plate, 10, having holes for the reception of the bolts, which plate is set up against the fish-plate so that the bolts shall project through the holes. Extending through this plate l() is a` pin or rivet, 11, which at the back ot' the plate is swagcd out, so as to form` a stud or boss, l2, and in front of thc plate the rivet is enlarged to forma head, 13. When the nuts are screwed ou the bolts against the plate l0, the elasticity of this plate (which is preferably made of steel) and the bearing,r of the stud or boss 12 against the tish-plate causes the ends of the platcto bend back and, by thc spring action thus formed, to assist in locking the nuts in place. 'lhe nuts are further locked by means ofalockingplate, 7, which consists of a piece of iron or steel (preferably the latter) Whose ends are bent in to form lips` 8, and in the body of the locking-plate is formed an elongated slot or hole, 9, which affords means for confining the lockingplate in position. After the plate 10 has been adjusted and the nuts screwed up against it as tightly as possible, the lockingplate is set between the nuts, so that the slot or hole 9 shall fit around the rivet back ot the head 13 and shall hold' the locking-plate inplace. The lips of the locking-plate then bearing against the sides of the nuts prevent them from turning, and form a secure reliable lock.

The advantages of my improvement consist in its simplicity, its cheapuess of construction, and its efficiency.

Ehe pointof invention consists in the back plate, 10, provided with a stud projecting from l the back to give a spring action to thel plate, and a. loekin'gplate secured to the back plate and bearing against the sides of the nuts.

l. As a nutloek for confining the` nuts of adjacent bolts, the combination of a. springplate which extends between the bolts, a stud 'or boss which projects from the back of the plate and bears against the surface back of it, so as to hold out the middle of the springplate while the ends are forced in by the nuts, and a second plate, which is secured to the sp1 in gfplate and which bears against the nuts, suhstantiail y as and for the purposes described.` 2. As a nut-lock for confining,r the nuts of adjacent bolts, a springplate which extends between the bolts, a rivet extending through the plate having a head projecting from the face ot' the spriug-plate and having a boss which bears against the surface back of the spri nge-plate, so as to hold out the middle of the said plate while the ends are forced in by the nuts, and a second plate having lockinglips which is removably attached to the rivet back of thc head, substantially as and for the pur poses described.

ln testimony whereof I have hereunto set my hand this 2d'day of February, A. D. 1888.

. ANDREW B. KI-ltlt.

Witnesses: v THOMAS W. Btitnwnm., W. B. CoRwlN. 

